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Paper Bag Machine. No. 231,642. Patented Aug. 31, 1880.

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Patented Aug. 31,1880.

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STATES PATENT. Fries.

DANIEL APPEL, OF CLEVELAND, OHIO, ,ASSIGNOR TO HIMSELF AND NEW- TON W. TAYLOR, OF SAME PLACE.

PAPER-BAG MACHINE.

SPECIFICATION forming part of Letters Patent No. 231,642, dated August 31, 1880.

Application filed October 6. 1879.

To all whom it may concern:

Be it known that l, DANIEL APPEL, of Cleveland, in the county of Ouyahoga and State of Ohio, have invented certain new and useful Improvements in Paper-Bag Machines and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it,

IO reference beinghad to the accompanying drawings, which form part of this specification.

This invention relates to mechanism for making paper bags having satchel-bottoms, and it is to that class of machines that my improvements more especially relate.

My improvements relate, essentially, to means for forming the diamond fold in the paper tube from which the bags are to be made, and to means for final folding the said diamond fold to complete the satchel-bottom. In this my machine the web of paper formed into a tube has one ply of the tube lifted from the other ply by means of a separator, and the tube is fed forward for a short distance over the end of a stationary nose by feeding-rollers, after which a retainer, made as a rolleh, is thrown down upon the tube, and a rotating diamond-fold layer, preferably made as a segment of a wheel and covered for a portion of 0 its length with an elastic or friction surface, is caused to engage one ply of the tube at the central part of its leading end and draw or feed the said ply backward over the said when like retainer in a direction opposite that in 5 which the body or main part of the tube is then being moved by the tube-feeding mechanism. While that part of the tube to form the rear portion of the diamond fold is being gradually bent over or fed backward, as de- 40 scribed, the other ply of the tube at its leading end-via, that part which is to form the advanced end of the diamond fold-is acted upon by and between an endless india-rubber or other belt carried by the said nose and a 5 supporting-surface for the under side of the tube, preferably an endless felt belt. The diamond fold having been laid, the diamond-fold layer is made to release that portion of the diamond fold which it first acted upon, and

the tube is severed transversely at the proper :fold layer plenty of room and time in which to act upon the succeeding tube without liability of clogging the machine. These endless belts and rollers by which they are moved keep the-bag-blanks in continuous rotation, presenting the said blanks with the diamond fold pasted in proper position over or in such relation to sets of continnonsly-rotating folding and pressing rollers that certain vibrating tucking-blades are enabled to operate upon :the said bag-blanks successively without interrupting the continuous forward motion of the said bag-blan ks, to thus form the two cross or final folds that complete the satchel-bottom. v

My invention consists in certain combinations of mechanism, which are more particularly hereinafter set forth, and specified at the end of this specification.

I do not herein intend to broadly claim mechanism for forming a diamond fold in the tube while in motion, but only substantially such mechanism as I have herein shown and described.

Figure 1 is an elevation of part of the front side of a paper-bag-making machine containing my improvements. Fig. 2 represents that part of the front side of the machine omitted or broken away from Fig. 1. Fig. 3 is an elevation of that side of the machine at the rear of Fig. 1. Fig. 4 is a plan view of that 0 part of the machine shown in Fig. 1. Fig.

5 isa plan view of that part of the machine shown in Fig. 2. Fig. 6 is a detail representing, in longitudinal vertical section, the various rollers and other devices which directly co-operate upon thepaper tube and blank in the formation of the diamond fold and of the final cross-folds to complete the bag-bottom. Fig. 7 is a diagram illustrating the nose (to be hereinafter described) just as ondfinal or cross folder; Fig. 24, adetail of the former determining the size of the tube it enters the open end of the tube. Fig. Sis a 1 section of Fig. 7. Fig. 9 is a similar top or plan view with the nose yet farther entered into the tube. Fig. 10 is a section of Fig. 9. Fig. 11 is a top or plan view, showing the movable segment or diamond fold layer as just commencing to detain andlay back one ply of the paper tube, while the other ply is being moved or fed forward. Fig. 12 is a section of Fig. 11. Fig. 13 is a top or plan view, showing the diamond-fold layer in the position it will occupy when the diamond fold is substantially formed. Fig. 14 is a vertical section of Fig. 13. Fig. 15 is a detail of parts of the mechanism for applying paste to the diamond fold. Fig. 16 is a diagram showing the diamond fold laid and pasted as it will appear after the operation thereon of the pasting devices. Fig. 17 is a diagram showing the tubular bag-blank having the diamond fold laid therein as it will appear when it is about to be folded transversely to make the cross or final fold nearest the leading end of the bag. Fig. 18 represents the tubular blank as it will appear after receiving its first final or cross fold. Fig. 19 represents the tubular blank in position to receive its second final or cross fold. Fig. 20 represents the tubular blank as it will appear after the second final or cross fold is being made. Fig. 21 is a detail representing the fast and slow moving devices to unfold the tubular blank from the position Fig. 20 to that represented in Fig. 22. Fig. 22 shows a completed satchel -bottoin bag. Fig. 23 is a detail showing, in front elevation, the notched folding-blade for making the seethe roller 48 (to be referred to) for driving the belt of the nose; Fig. 25, details of the devices for operating the tube-severing mechanism at' different times with relation ,to the feed to cut off the tube for a bag of the desired length; Fig. 26, a detail of the nose and its belt; Fig. 27, a detail of the tube-cutting devices; Fig. 28, a top view of the roller 43. r

The frame-work A of the machine will be of any suitable shape to properly support the Working parts. The web of paper to be converted into bags, wound to form a roll, as at B, is held upon a shaft, 0. The said roll of paper will be operated upon by a suitable friction device to prevent its moving too freely. This friction device is herein shown as a strip of leather passed around the roll and weighted at E, Fi 2.

The web of paperis led under and about the roller F, between it and the roller Gr, thence to, over, and about the former H, by means of which and certain fingers l I (see Fig. 4) the said web is turned and has its edges lapped one over the other to complete the tube from which the bags are to be made, the width of and the width of the bag. One edge of the web, as it passes over the roller G, has paste applied to it by the paste-wheel J in the pastebox K, all in the usual manner. These fingers 1 l are supported only at their outer ends,

their free ends being extended under the former and preferably somewhat beyond the center of its width.

, At the delivery end of the former H, and extended forward from and between the feed ing-rollers and tube-cuttin g mec-hanism, is a separator, L, herein shown as a steel or metal spring. Thepurposeof this separatoris to keep the paper tube open and spread it at the proper times for the easy and certain entrance therein of the nose to, to behereinafter described. This separator is extended forward from the end of the former H between the first set, M,of tube-. feeding rollers, the upper one of the said rollers being grooved annularly for such purpose,

and between the set of tube-severing rollers N N.

The roller N has connected with it two tube-severing blades, 1), (see detail, Fig. 27,) which are adapted to enter a slot. 0., in the lower roller, N. The separator (see Figs. 4 and 6) has an opening, (I, to receive through it the end of the lip-cutter 0, carried by the arm on the rocker-shaft 1?, which derives its movement through a slotted arm, Q, thereon, in which travels a pin, R, of a plate, f, connected with a pinion, g, on the shaft on, extended across the machine, and having at its other end a pinion, S. This cutter c cuts a small slit through both plies of the tube in an inclined or slanting direction, so that the portions of the tube so cut by it diagonally will appear at what is to'constitute the mouth of the bag, near its center, thus forming edges or portions which will project the one beyond the other portion, to facilitate opening the bag when the same is to be filled.

The roller N is provided with a rib or projection, N (see Fig. 6,) to operate upon and pos tively lift the separator T1, resting within the tube, to open the end of the tube just as the nose dis to enter the tube in the formation of the diamond fold.

The main shaft '1 of the machine, driven in any suitable way, preferably by a belt on usual fast and loose pulleys, has upon it'pinions 2 2*, to act through other gearing (shown in Figs. 1, 2, 4) to operate all the other parts of the machine.

The pinion 2 is the source of motion for the train of gear 30, 31, 32, 33, 34, 35, 36, and 37. The gear 36 is partly broken away (see Fig. 3) to show the gear 37 behind it. These gears serve to drive the several small pinions shown in Fig. 3, arranged above and to the right of the said gears 36 and 37, and positively turn the shafts upon which the said small pinions are secured.

The gear 36 operates positively the roller38", and the latter the roller 38 geared above it. The roller 38 drives the endless belts 39, to be hereinafter described, the said pair of rollers also acting in connection with the belts 39 to deliver the tubular blank having the diamond fold therein into position above the rollers 40 41. The gear 34 of this train engagesthe pinion 45 at the end of the small roller 46, and the pinion 45engages the pinion 47 at the end of the small roller 48, located just above the said roller 46. The gear 37 actuates the rollers 40, 41, 42, and 43.

The roller 48, a short distance at each side from the center of its length, is turned or has formed in it in any suitable way two annular grooves, (see Fig. 4 and detail, Fig. 24,) leaving a small annular collar,49, (see Fig.6,)over which passes an endless indie-rubber or other belt, 9, the said belt being also extended over and about a small roller, h, at or near the end of nose a. This nose is herein shown as a piece of metal pivoted upon and held against longitudin al motion by a small rod, 6. The shank of the nose-piece is provided with a longitudinal slot just in advance of the rod, to receive through it the periphery of the narrow annular collar 49 on the roller48, to thus permit the lower portion of the endless belt 9, set in motion by this rotary collar 49, to travel horizontally above and in contact with the paper tube for its whole length between the said collar and roller h. This belt, carried by the nose and driven positively, as stated, acts, in connection with the rollers 46, 50, and 51, to feed the tube forward while the diamond-fold layer W is operating, as herein shown, upon the upper ply of the tube to form the diamond fold therein.

The pinion 2 is the source of motion for the train of gearing 52, 53, 54, 55, 56, g, 57, 58, 59, 60, and 61.

The shaft :r, upon which is attached the gear 9, before described, has at its opposite end a gear, S, that engages a gear, 62, on the shaft 63, to which is attached the diamond-fold layer W, the said shaft carrying at one end the cam 64. (See Fig. 1.)

The gear 52 does not, as would appear in Fig 1,directly engage the gear 53; butinstead does engage a gear, 53*, at the rear of gear 53, the latter gear being partially brokenaway in Fig. 1. to show the gear 53 of the same size at the rear of it.

The tube-feedin g rollers M are operated in unison through the gearing 52, 53, 53", and 54. The gear 55 is an idle gear, supported on a stud, 69, in an arm, 70, made adjustable on a stud, 71, by means of an adjusting and set screw, 72. This gear 55 engages the gear 56 on a short journal, 3, held in the upper end of the said arm 70. The gear 56 has connected with it a disk, 73, having projecting from one side ofit- (see Fig. 4 and detail, Fig. 25) apin, 74, that enters a radial slot in a disk, 75, fixed upon the axle ofthe lower roller, N, of the tube-cutting mechanism. This roller N, at its other end, carries the pinion 66, that engages the pinion 67 and drives the upper roller, N, at the same speed as the roller N.

The speed of the feeding-rollers'M is always the same but to out the tube to form bagblanks of difierent lengths change the speed of the cutting-rollers. This I do by removing the gear 53 and substituting for it a gear of a smaller or larger size, as it may be, adjusting the arm 70 up or down, so that its gear 55 will engage the gear substituted for gear 53. This change of position of the arm 70 places the center 3 of the gear 56 more or less out of line with the center or axis of the roller N, and causes the pin 74 in the slot in the disk 75 to impart to the roller N and its fellow N a variable speed. These cuttingrollers revolve once for each bag, whereas the feeding-rollers may revolve a greater number of times for eachbag; but the speed of the cutting-rollers is so varied-that is, the slow and fast speeds given to it during each single revolution by the crank-pin 74 and slotted disk 75 is so timed-that the cutters will arrive in proper position to sever the tube at the proper time, and the surface speed of the cutters, as they act to cut the tube, will be equal to the speed of the feed-rollers.

The cutting-blades b, as herein shown, have between them a gap (see Fig. 27) of sufficient width to accommodate the width of the separator L between the rollers N N, so they could not of themselves completely sever the tube or paper into bag-lengths. This central portion of the tube is, however, herein severed by the lip-cutter 0 before the cutters I) act.

The cam 64 strikes a pin, 80, on an arm, 81, of a rock-shaft, 82, provided with two arms, 83, that carry the retainer 84, it being herein shown as a roller located in front of the end of the separator L and immediately above a loosely-held roller, 85. The arm 81 on the shaft 82 will be suitably acted upon by a spring to retain the pin of the arm 81 normally against the periphery of the cam 64, which is so shaped as to permit such spring to. keep the retainer 84 up above the paper tube, substantially in the condition shown in Fig. 8, while the tube is be1n g moved forward by the feedingrollers M M over the nose a, as in Fig. 8, the upper.

ply of the tube being at this time lifted positively by means of the separator L, which is then raised by the projection N 2 of the roller N or by any other suitable means. The end of the tube is fed forward over the said nose untilthe belt 9 of the nose engages the lower half or seam side of the tube, after which the cam 64 operates to depress the arm 81 and the retainer 84 upon the tube, causing the retainer to pinch the tube between it and the endless belt A on the roller 85.

When the tube has been fed forward substantially into the position shown in Fig. 10 and the retainer depressed, as described, the upper ply of the tube is sufficiently elevated, at or near its central part, to be engaged by the end of the diamond-fold layer W, which acts to lay the said ply back over and upon the retainer 84. This diamond-fold layer, kept continually in, rotation, resembles the segment of a wheel, and is covered for a portion of its 1 have only to length with an india-rubber, leather, or other friction-surface, 20 thatduring the rotation of the said diamond-fold layer strikes a portion of the upper ply of the tube and lays it back upon the roller like retainer 84, the said friction-surface, by its action upon the said upper ply of the tube so held laying and feeding it backward in the direction of the arrow 88, and between it and the retainer 84, while the under ply of the paper tube, constituting the lead ing end of the diamond fold, is at the same time beingmoved positively forward in the direction of the arrow 89 by means of the positively-driven belt g, heretofore described, carried by and upon the rollers 71. and the disk 49 and the endless belt A The beltgis pressed by the roller it down upon the endless belt A",

composed of felt or other suitable material. In this way it will be seen that during the time while the tube is being positively fed forward by the belt g, I cause the diamond-fold layer to engage the upper ply of the tube, at or near its center, at that point or part of it which is to serve as the rearmost corner of the diamond fold, and carry or feed it backward positively over the retainer in a direction opposite the movement of the main body of the tube, and while the latter is being fed forward, as described. An opening is kept at the center of the diamond fold equal to the width of the beltg and segment W. The speed of rotation of the diamoiul-fold layer WV is a little in excess of the speed of forward motion of the tube, to obviate the formation of wrinkles in the part of the tube laid back over the retainer.

Duringthe continuance ofthe forward movement of the tube, as soon as that part of the tube which is to form the central fold of the satchel-bottom arrives at a point just in front of or substantially at the front of the retainer 84, the tube is severed between the cutters N N and the friction-surface 10 which before acted to carry the upper ply or rear half of the diamond fold backward, as before described, passes beyond the retainer 84, thus releasing the rear end of the diamond fold, leaving it free to be moved forward over the retainer 84 in a direction opposite that indicated by the arrow 88, Fig. 12, this being necessary because, as soon as the diamond fold is laid, the rear part of the diamond fold must be released, so as not to retard the forward motion of the paper, which has thus far been continuous.

mond fold to be pressed and laid flat between the said belts and rollers m, and 50, and 48, and 46, upon which they areheld. This nose (I, at its front end, is made as a double wedge, inclined at bottom and top, the undermost incline, in connection with the felt belt A making a wedging space, into which the leading end of the diamond fold may readily enter.

The belts 39 are kept taut by means of st *aining-rollers m mounted on a rod in arms m projecting from an adjustable rock-shaft, m which permits the said arms and rollers to be adjusted as may be desired.

The endless belt A (shown in Fig. 6) is sup posed to be substantially as wide as the widest tube or bag to be made in the machine. This belt is extended over the positivelydriven roller 38*, over the loosely-held rollers 86 S5 51, over the driven roller 46, and be tween it and the driven roller 48, and thence over the elastic-surface roller 87. A tensionroller, 1S8, held in an arm, 89, (see Fig. 3,) keeps the said belt taut. The two belts 39 and belt A and the beltgareintended tobe driven at the same speed, but at a speed faster than the surface speed of the feeding-rollers M, to thus enable the said belts to carry away the tubular blank after the diamondfold has been been laid. This excess of speed renders easier and more certain the severing of the tube, and also acts to remove the mouth or rear end of the bag beyond the end of the nose just before the end of the nose is to actupon the tube, or a portion of the upper ply thereof, to form the diamond fold in the succeeding bag, thus obviating clogging.

The lower ply of the tube is acted upon at its upper side within the tube by the sepaaator as the lip-cutter passes through it, and the upper ply ot' the tube will be held down sufficiently by the feeding-rollers above the tube to resist the thrust of the said cutter.

The diamond-fold layer 7 and the retainer together form means to positively draw or feed backward sufficient of the tube to. form the rear end of the diamond fold as the other ply of the tube is being fed positively forward horizontally in the opposite direction.

The paste or gum for the diamond fold is supplied from a box, (0 containing a roller, a, on a shaft, a having at one end a pinion, a engaged and driven by the pinion a on the shaft a, (see Fig. 3,) having at its other end (see Fig. 1.) the gear 69, driven by gear 59. The quantity of paste taken up by this roller a is regulated by means of an adjustable doe tor or scraper, ahof usual construction, coming in contact with the roller (i it thus receiving the proper quantity of paste. The said pasting device is composed of a center pad, a, and two cam-shaped disks, 0 0, placed side by side on the shaft at. These disks are cut away so as to leave working-edges to correspond in length with the length of the diamond fold, and they are made adjustable toward and from the center pad to correspond IIO with the width of the open reenter part of the diamond fold, and the pad is also made adjustable to enable it to be changed in position or be turned about the shaft n to operate correctly with the particular disks 0 being used. The pad it applies paste upon the diarnond fold, as indicated at W, and the disks, as indicated by the parallel rows of stipple-work, Figs. 16 and 18.

The diamond fold having been made and pasted, the end of the bag-blank so folded is delivered by the rollers 38 38 over the setiof rollers 40 41 far enough to place that part of the diamond fold to receive the first cross or final fold in the position indicated at Figs. 17, 18, when the tucking-blade b carried by the vibratory arms b of the rocker-shaft 11*, is quickly thrown down, causing the said blade to crease and tuck the paper between the bight of the said rollers, which act to grasp and carry the said bag-blank forward between them. This rocker-shaft b has an arm, b connected by link 6 with a crank, b adjustably secured to the shaft 72 having fast upon it the gear 61, driven by the gear 59. This shaft 21 prolonged across the machine and extended through and supporting loosely the gears 36 37, before described, has adjustably attached to it the crank 12 The crankpin of this crank 12 is connected with one end of the link 0 the opposite end or which is joined with-the arm 0 attached to the rockshaft 0 provided with arm 0 at the end of which is the tucking-blade c notched at 0 The bag-blank, having been tucked between the rollers 40 41, is fed through between the said rollers and the deflector (1 that directs the folded end of the diamond fold between the rollers 4142 until by a continuous forward movement the once cross-folded blank arrives at the position indicated in Fig. 19, when the folderblade 0 is thrown down and tucks the rear part of the diamond fold and the body of the blank between the two rollers 42 43, forming the second cross or final fold on the line a a", Fig. 18, leaving the bag in the condition shown in Fig. 20.

The end of the blank (shown in Fig. 18) is received into the pocket 6 it acting to prevent the first cross-fold being unfolded or in terfering with the blade 0 as it descends to make the second cross or final fold.

The pocket is held upon a rod, 0 The notch c in blade 0" is to receive the overlapping edge or extreme end of the first of the final folds, so that it will not be raised. up or pulled back by the blade 0 when rising from between the rollers 42 43.

The roller 43 (see Fig. 28) is reduced from its ends to near its center, leaving a narrow surface, 0 substantially equal in length to the width of the diamondfolded part to be creased by the blade 0 so as not to crease or press the body of the paper bag so hard as to prevent its springing open partially after leaving the delivery-plate e bag in the condition Fig. 20 is delivered on a slow-moving endless traveling belt, f extended forward to a drier of usual construction. Above this belt is another belt, f which is made to converge toward and so to nearly touch the beltf near the drier. This loeltf is driven, in any suitable manner, at a speed greater than that of belt f causing belt f to act upon and unfold the bag at the crease across its body, (see Fig. 21,) laying the bag out Hat by the time it arrives at a position when the belts run closely together.

In the drawings the bag-blank is represent ed by the letter B and the bag by the letter B The roller 87 is elasticsurfaced, to support the belt A in a yielding manner as the pasters operate upon the diamond fold.

I claim- 1. In a paperbag machine, a former for the tube and feeding mechanism to move the tube forward continuously, combined with the retainer, made as a roller, and the rotating diamond-fold layer; to act upon the end of the upper ply of the tube and feed it backward horizontally while the tube is being fed forward, and with means to draw the leading end of the under ply forward during the formation of the diamond fold, substantially as described.

2. Ina paper-bag-making machine, mechanism to feed the tube forward, the nose over which the tube is fed, the endless belt carried by it, and the retainer, combined with the rotating diamond-fold layer W, to operate substantially as described.

3. The tube-feeding mechanism, the nose over which the end of the tube is fed, the separator, and means to lift it and open the mouth of the tube before and as it is fed over and upon the nose, combined with the retainer and the diamond-fold layer, all operated to form the diamond fold while the tube is fed continuously forward, substantially as described.

4. The separator provided with an opening at the rear of the severing-cutters, combined with the lip-cutter, to cut diagonally through both plies of the tube and to pass through the said opening, substantially as described, the said lip-cutter in its cutting movement moving forward in the direction of the movement of its tube and cutting the two plies diagonally.

5. The endless belt A the belts 39, and the stationary nose, combined with the diamondfold layer to act upon and lay back the upper ply of the tube, and a retainer, substantially as described.

6. The stationary nose and the positivelydriven endless belt carried by it, combined with the endless belt A, substantially asand for the purpose described.

7. In a paper-bagmaking machine, mechan ism to move the tube forward while thediamond IIO fold is being laid, and the nose and its endless belt to act on the cent-ralpart of the leading end of the diamond fold supported below the said belt, combined with the two independent endless belts each side of the nose, to engage the diamond fold at its diagonal edges and draw the bag-blank forward, and with the rollers about which the latter belts are carried to press the diamond fold, substantially as described.

8. The combination, in a paper-bag-making machine, of the following instrumentalities, viz: the former about which the tube is made, separator located within the tube beyond the front end of the former, feeding mechanism to feed the tube forward over the former, means to form a diamond fold at the leading end of the tube while bein g fed forward, cutting mechanism to sever the tube into bag-lengths, a set of rollers and blade to form the cross or final fold at the leading corner or end of the final fold, and a blade and rollers to act upon and form the cross fold across the rear corner of the diamond fold, the rollers cooperating with those two blades being located one next the other to act upon and carry the bag-blank directly between them, as described, the last blade to make the last final or cross fold, also creasing the body of the bag-blank between the central crease and the open end of the bag, thus obviating reversing the lead of the diamond-folded part of the bag-bottom when crossfolding it, as set forth.

9. In a paper-bag-making machine, the set of folding-rollers 40 41 and the tucking-blade b operating with them, combined with a set of rollers, one of which, 42, is located to cooperate with the roller 41, to directly receive between the said rollers 41 and 42 the once cross-folded tubular blank previously'laid to form the diamond fold, and the second crossfolding or tucking blade 0 the said blades operating in succession to form the two final or cross folds while the bag is in continuous motion in one direction.

10. The two sets of folding-rollers 40 41 and 42 43, the rollers 41 and 42 running in the same direction and receiving the bag-blank between them, and the tucking-blades b 0 co-operating therewith,combined with the guide d arranged between the bight of the rollers 40 41 and 41 42, as and for the purpose shown and described.

11. The combination, with the rollers 42 43 and the tucking-blade c of the endless belts f f one being moved faster than the other to partially unfold the bag, as and for the purposes set forth.

12. The set of folding-rollers 42 43 and tucking-blade c", to make the final cross-fold in the diamond fold, combined with the pocket 0 to receive the once cross-folded end of the bagblank preparatory to the descent of the said tucking-blade to tuck the once cross folded bag-blank between the said rollers, the said pocket preventing the blank from being unfolded by the action of the tucking-blade a", substantially as described.

13. The tucking-blade b and the folding rollers co-operating therewith to form the first cross or final fold, combined with the tucking blade 0 and the folding-rollers co-operating with it, one of the latter rollers having its act ing-surface made narrow to obviate creasing the body of the bag-blank, as and for the purpose set forth.

14. In a paper bag-making machine, a set of foldingrollers to make the second final or cross fold, combined with the tucking-blade c notched, as described, to obviate drawing back or lifting the corner of the diamond fold when the blade is being raised after it has tucked the paper between the folding-rollers.

15. In a paper-bag machine, the rotary paster composed of the two disks 0 0 and pad n, adj ustably connected with the rotary shaft, all substantially as described.

16. In a paper-bag-making machine, the nose, the rolling retainer to bear upon the tube, and the feeding-rollers to feed the tube forward, and the rotary diamond-fold layer provided with the friction-surface w substantially as described, to draw or feed part of the upper ply of the tube backward to form the diamond fold while the under ply is being moved continuously forward, substantially as described.

17. The feeding-rollers for the paper, the rotary cutting mechanism, and the slotted disk connected therewith, combined with the adj ustable positively and uniformly driven crank pin and rotary disk, whereby the said crankpin, driven at a uniform speed, may be made, by its adjustments, to rotate the cutters at a uniform or at a variable speed during each rotation, to control the length of the bag, substantially as described.

18. The combination, with a pair of pressure-rolls and a folding-blade which forms the first of the final fold, a second pair of pressure-rolls located in a horizontal plane below the first pair, and a folding-blade adapted to form the second of the final folds, of a guide which directs the bag-blank from the first to the second pair of pressure-rolls, and a guide located above the second pair of rolls, adapted to maintain the first of the final folds in position while the second is being formed, substantially as set forth.

19. The tube'feeding mechanism and rolling retainer to bear upon it and a nose to hold down one ply of the tube at its leading end, combined with the rotating diamond-fold layer to gradually draw backward the other ply at theleadin g end of the tube to form the diamond fold, and mechanism to move the said diamondfold layer at a faster speed than that given to the tube by the tube-feeding devices, as and for the purpose set forth.

20. In a paper-bag machine, two sets of foldin g-rollers, 40 41 and 42 43, arranged one roller of one set immediately below and to cooperate with one roller of the other set, as shown and described, and gearing to actuate them to keep the bag-blank moving continuonsly forward, combined with two. vibrating of the diamond fold nearest the mouth of the tucking-blades, b 0 moving in the same dibag being atsuch time rearmost and unfolded rection, one at the rear of the other, and 00- substantially as described. operating with the said foldingrollers to form In testimony whereof Ihave signed my name 5 the final or cross folds in the diamond-folded to this specification in the presence of two sub- 15 part of the-bag-blank while the said blank is scribing Witnesses.

being moved continuously forward, and the DANIEL APPEL. guide (1 to direct the once cross-folded end of Witnesses: the bag-blank from the bight of therollers 40 J NO. OROWELL- Jr.,

:0 4i directly between the rollers 41 42, the end WILLARD FRAOKER. 

